Sterling Silver Abalone Shell Old Pin

Lovely old pin of marked sterling silver (marked on back but mostly covered by old tarnish), in which is bezel mounted a fabulous piece of abalone with pink "pearl" rising in the center. This pin measures 1 and 1/8" long and is in good condition, we have not polished this for the photos. The silver backing is shaped borders and has tiny designs as well. A truly lovely piece.